53151391 has 8 divisors (see below), whose sum is σ = 54975104. Its totient is φ = 51334560.

The previous prime is 53151377. The next prime is 53151409. The reversal of 53151391 is 19315135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53151391 - 2⁵ = 53151359 is a prime.

It is the 7291-st Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53151331) by changing a digit.

It is a nontrivial repunit in base 7290.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17605 + ... + 20401.

It is an arithmetic number, because the mean of its divisors is an integer number (6871888).

Almost surely, 2^53151391 is an apocalyptic number.

53151391 is a deficient number, since it is larger than the sum of its proper divisors (1823713).

53151391 is a wasteful number, since it uses less digits than its factorization.

53151391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3441.

The product of its digits is 2025, while the sum is 28.

The square root of 53151391 is about 7290.5000514368. The cubic root of 53151391 is about 375.9858881643.

The spelling of 53151391 in words is "fifty-three million, one hundred fifty-one thousand, three hundred ninety-one".